As the European Project Unravels, What Should the US Do?

Europe is in crisis. Once more, America will have to step in to save us (Natalie Nougayrède) from the Guardian [of the UK]
"From refugees to security to Brexit, Europeans cannot take care of themselves. The US has been indifferent so far but we need it at our side. ... It is obviously unrealistic to think the US is likely to repeat the kind of assistance it deployed in 1947. But the US urgently needs to seriously re-engage on European matters. Failing that, it risks seeing the European project unravel, with more disorder pouring into and across the continent and, ultimately, the loss of key allies."